<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>PCM player</title>
    <style>
      .visualizer {
        width: 400px;
        height: 200px;
      }
    </style>
  </head>

  <body>
    <div id="container" style="width: 400px; margin: 0 auto">
      <!-- 文件输入框 -->
      <label for="file-input">选择文件：</label>
      <input
        type="file"
        id="file-input"
        accept=".txt,.pdf,.doc,.docx,image/*"
      />
      <br />
    </div>

    <script src="./client.js"></script>
  </body>
</html>
